<template>
  <div id="app">
    <p v-if="seen">现在你看到我了</p>
  </div>
</template>

<script>
    export default {
        name: "vIf",
      el: '#app',
      data() {
        return  {seen: true}
      }
    }
</script>

<style scoped>

</style>
